>[... much discussion removed...]> For Your Information...>> 1,4,9,16,36... are the sequence of SQUARES OF NATURAL NUMBERS>> 1,1,2,3,5,8,13,21,34... is the FIBONNACCI SEQUENCE>> 2,3,5,7,11,13,17,19,23,27... is the sequence of PRIMES!
^
^- This is NOT a prime.
Since 3*9=27.

>I don't get it. How can 13 be both PRIME and FIBONNACCI?! Is this what>is meant by "twin prime"??